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|
use chrono::*;
use uuid::Uuid;
// use std::io;
use std::fmt;
use std::mem;
use std::collections::HashMap;
use properties::*;
/// VEVENT [(RFC 5545, Section 3.6.1 )](https://tools.ietf.org/html/rfc5545#section-3.6.1)
#[derive(Debug, Default)]
pub struct Event { properties: HashMap<String,Property> }
/// VTODO [(RFC 5545, Section 3.6.2 )](https://tools.ietf.org/html/rfc5545#section-3.6.2)
#[derive(Debug, Default)]
pub struct Todo { properties: HashMap<String,Property> }
impl Event {
/// Creates a new Event.
pub fn new() -> Self {
Default::default()
}
/// End of builder pattern.
/// copies over everything
pub fn done(&mut self) -> Self {
Event { properties: mem::replace(&mut self.properties, HashMap::new()) }
}
//pub fn repeats<R:Repeater+?Sized>(&mut self, repeat: R) -> &mut Self {
// unimplemented!()
//}
}
impl Todo {
/// Creates a new Todo.
pub fn new() -> Self {
Default::default()
}
/// End of builder pattern.
/// copies over everything
pub fn done(&mut self) -> Self {
Todo { properties: mem::replace(&mut self.properties, HashMap::new()) }
}
//pub fn repeats<R:Repeater+?Sized>(&mut self, repeat: R) -> &mut Self {
// unimplemented!()
//}
}
/// Implemented by everything that goes into a `Calendar`
pub trait Component {
/// Returns kind of component.
///
///
/// Must be ALL CAPS
/// These are used in the `BEGIN` and `END` line of the component.
fn component_kind() -> &'static str;
/// Allows access to the inner properties HashMap.
fn properties(&self) -> &HashMap<String,Property>;
/// Writes `Component` into a `Writer` using `std::fmt`.
fn fmt_write<W: fmt::Write>(&self, out: &mut W) -> Result<(), fmt::Error> {
writeln!(out, "BEGIN:{}", Self::component_kind())?;
let now = UTC::now().format("%Y%m%dT%H%M%S");
writeln!(out, "DTSTAMP:{}", now)?;
writeln!(out, "UID:{}", Uuid::new_v4())?;
for property in self.properties().values() {
property.fmt_write(out)?;
}
writeln!(out, "END:{}", Self::component_kind())?;
Ok(())
}
/// Guess what
fn to_string(&self) -> String {
let mut out_string = String::new();
self.fmt_write(&mut out_string).unwrap();
out_string
}
/// Append a given `Property`
fn append_property(&mut self, property: Property) -> &mut Self;
/// Construct and append a `Property`
fn add_property(&mut self, key: &str, val: &str) -> &mut Self {
self.append_property( Property::new(key, val));
self
}
/// Set the DTSTART `Property`
fn starts<TZ:TimeZone>(&mut self, dt: DateTime<TZ>) -> &mut Self
where TZ::Offset: fmt::Display
{
// DTSTART
self.add_property("DTSTART", dt.format("%Y%m%dT%H%M%S").to_string().as_ref());
self
}
/// Set the DTEND `Property`
fn ends<TZ:TimeZone>(&mut self, dt: DateTime<TZ>) -> &mut Self
where TZ::Offset: fmt::Display
{
// TODO don't manually use format but the rfc method, but test timezone behaviour
self.add_property("DTEND", dt.format("%Y%m%dT%H%M%S").to_string().as_ref());
self
}
/// Set the DTSTART `Property`, date only
fn start_date<TZ:TimeZone>(&mut self, date: Date<TZ>) -> &mut Self
where TZ::Offset: fmt::Display
{
// DTSTART
self.append_property(
Property::new("DTSTART", date.format("%Y%m%d").to_string().as_ref())
.append_parameter(ValueType::Date)
.done());
self
}
/// Set the DTEND `Property`, date only
fn end_date<TZ:TimeZone>(&mut self, date: Date<TZ>) -> &mut Self
where TZ::Offset: fmt::Display
{
// DTSTART
self.append_property(
Property::new("DTEND", date.format("%Y%m%d").to_string().as_ref())
.append_parameter(ValueType::Date)
.done());
self
}
/// Set the DTSTART `Property`, date only
fn all_day<TZ:TimeZone>(&mut self, date: Date<TZ>) -> &mut Self
where TZ::Offset: fmt::Display
{
// DTSTART
self.append_property( Property::new("DTSTART", date.format("%Y%m%d").to_string().as_ref()).append_parameter(ValueType::Date).done() )
.append_property( Property::new("DTEND", date.format("%Y%m%d").to_string().as_ref()).append_parameter(ValueType::Date).done() )
;
self
}
/// Prints to stdout
fn print(&self) -> Result<(), fmt::Error> {
let mut out = String::new();
try!(self.fmt_write(&mut out));
println!("{}", out);
Ok(())
}
/// Set the summary
fn summary(&mut self, desc: &str) -> &mut Self {
self.add_property("SUMMARY", desc)
}
/// Set the description
fn description(&mut self, desc: &str) -> &mut Self {
self.add_property("DESCRIPTION", desc)
}
/// Set the LOCATION
/// 3.8.1.7. Location
fn location(&mut self, location: &str) -> &mut Self {
self.add_property("LOCATION", location);
self
}
/// Set the visibility class
fn class(&mut self, class: Class) -> &mut Self {
self.append_property(class.into())
}
}
macro_rules! component_impl {
($t:ty, $kind:expr) => {
impl Component for $t {
/// Tells you what kind of `Component` this is
///
/// Might be `VEVENT`, `VTODO`, `VALARM` etc
fn component_kind() -> &'static str { $kind }
/// Read-only access to properties
fn properties(&self) -> &HashMap<String, Property> {
&self.properties
}
/// Adds a `Property`
fn append_property(&mut self, property: Property) -> &mut Self {
self.properties.insert(property.key(), property);
self
}
}
}
}
component_impl! { Event, "VEVENT" }
component_impl! { Todo , "VTODO"}
|
